Codecompass

Abstract

CodeCompass is an open source LLVM/Clang-based tool developed by Ericsson Ltd. and Eötvös Loránd University, Budapest to help the understanding of large legacy software systems. Based on the LLVM/Clang compiler infrastructure, CodeCompass gives exact information on complex C/C++ language elements like overloading, inheritance, the usage of variables and types, possible uses of function pointers and virtual functions - features that various existing tools support only partially. Steensgaard's and Andersen's pointer analysis algorithms are used to compute and visualize the use of pointers/references. The wide range of interactive visualizations extends further than the usual class and function call diagrams; architectural, component and interface diagrams are a few of the implemented graphs. To make comprehension more extensive, CodeCompass also utilizes build information to explore the system architecture as well as version control information.